ALERT: Rowley Law PLLC is Investigating Proposed Acquisition of Proteostasis Therapeutics, Inc.

Rowley Law PLLC is investigating potential securities law violations by Proteostasis Therapeutics, Inc. (NASDAQ: PTI) and its board of directors concerning the proposed acquisition of the company by Yumanity Therapeutics. Proteostasis Therapeutics stockholders will own approximately 32.5% of the combined company. The transaction is expected to close in the fourth quarter of 2020.

If you are a stockholder of Proteostasis Therapeutics, Inc. and are interested in obtaining additional information regarding this investigation, please visit us at: http://www.rowleylawpllc.com/investigation/pti/. You may also contact Shane Rowley, Esq. at Rowley Law PLLC, 50 Main Street Suite 1000, White Plains, NY 10606, by email at [e-mail], or by telephone at 914-400-1920 or 844-400-4643 (toll-free).

Rowley Law PLLC represents shareholders nationwide in class actions and derivative lawsuits in complex corporate litigation. For more information about the firm and its attorneys, please visit http://www.rowleylawpllc.com.

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Shane Rowley, Esq. Rowley Law PLLC [e-mail] 914-400-1920 or 844-400-4643 (toll-free)